﻿/// <summary>
/// Copyright(c) 2010-2012 LZT CORPORATION, All Rights Reserved.
///
/// Workflow Designer Application
///
/// author   張強 
/// version  1.00   Date: 2010-11-02
/// </summary>

using System;
using System.Windows;
using System.Diagnostics;
using WorkflowDesigner.Workflow.Area;
using System.Globalization;

namespace WorkflowDesigner
{
    public delegate void ApplicationLanguageChangeNotify();

    public partial class App : Application
    {
        public static DesignView theMainView = null;
        public static event ApplicationLanguageChangeNotify OnAppLanguageChange = null;

        /// <summary>
        /// 
        /// </summary>
        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            // 多语言支持，初始化为中文
            ChangeLangeuage(UILanguage.Language_CHS);
            this.RootVisual = new MainPage();
        }

        private void Application_Exit(object sender, EventArgs e)
        {
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            // If the app is running outside of the debugger then report the exception using
            // the browser's exception mechanism. On IE this will display it a yellow alert 
            // icon in the status bar and Firefox will display a script error.
            if (!System.Diagnostics.Debugger.IsAttached)
            {
                // NOTE: This will allow the application to continue running after an exception has been thrown
                // but not handled. 
                // For production applications this error handling should be replaced with something that will 
                // report the error to the website and stop the application.
                e.Handled = true;
                Deployment.Current.Dispatcher.BeginInvoke(delegate { ReportErrorToDOM(e); });
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="e"></param>
        private void ReportErrorToDOM(ApplicationUnhandledExceptionEventArgs e)
        {
            try
            {
                string errorMsg = e.ExceptionObject.Message + e.ExceptionObject.StackTrace;
                errorMsg = errorMsg.Replace('"', '\'').Replace("\r\n", @"\n");

                System.Windows.Browser.HtmlPage.Window.Eval("throw new Error(\"Unhandled Error in Silverlight Application " + errorMsg + "\");");
            }
            catch (Exception)
            {
            }
        }

        private static int m_nMaxIndex = 0;

        public static int NextMaxIndex
        {
            get
            {
                m_nMaxIndex++;
                return m_nMaxIndex;
            }
        }

        private static bool m_bIsCtrlKeyDown = false;

        public static bool IsCtrlKeyDown
        {
            get
            {
                return m_bIsCtrlKeyDown;
            }
            set
            {
                m_bIsCtrlKeyDown = value;
            }
        }

        #region 多语言支持
        public enum UILanguage
        {
            Language_CHS = 0,
            Language_ENU = 1
        }

        public static void ChangeLangeuage(UILanguage lang)
        {
            CultureInfo culture = null;
            switch (lang)
            {
                case UILanguage.Language_CHS:
                    culture = new CultureInfo("zh-CN");
                    break;
                case UILanguage.Language_ENU:
                    culture = new CultureInfo("en-US");
                    break;
            }
            if (culture == null)
            {
                culture = new CultureInfo("zh-CN");
            }
            System.Threading.Thread.CurrentThread.CurrentCulture = culture;
            System.Threading.Thread.CurrentThread.CurrentUICulture = culture;
            if (OnAppLanguageChange != null)
            {
                // 通知所有实现了多语言的界面,语言变化了
                OnAppLanguageChange();
            }
        }
        #endregion
    }
}
